Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\astra-backoffice\vendor\symfony\http-kernel\Tests\EventListener\ResponseListenerTest.php:24 Stack trace: #0 {main} thrown in C:\xampp\htdocs\astra-backoffice\vendor\symfony\http-kernel\Tests\EventListener\ResponseListenerTest.php on line 24